Saw gummer and setter



(No Model.) 2 Sheefis -sheet 1, G. S. STROM.

SAW GUMMER AND SETTER..

Patented 001;. 21, 1890.

UNITED STATES PATENT OFFICE.

GILBERT S. STROM, OF WHITE ROCK, MINNESOTA.

SAW GUMMER AND SETTER.

SPECIFICATION forming part Of Letters Patent N0. 438,654, dated October21, 1890.

Application filed June 14, 1890. Serial No. 355,458. (No model.)

To all whom it may concern:

Be it known that I, GILBERT S. STRoM, a citizen of the United States,residing at White Rock, in the county of Goodhue and State of Minnesota,have invented new and useful Improvements in Saw Gummers, Setters, andCutters, of which the following is a specification.

This invention has for its object to provide a novel, simple, efficient,and economical apparatus having the requirements for gumming, setting,and cutting the teeth of sawplates; and to accomplish this object myinvention involves the features of construction, the combination orarrangement of devices, and the principles of operation hereinafterdescribed and claimed, reference being made to the accompanyingdrawings, in which- Figure 1 is a perspective view of the improvedapparatus. Fig. 2 is a similar view looking at the side opposite to thatshown by Fig. 1. Fig. 3 is a horizontal sectional view taken in a planedirectly above the dies and showing the gage-bars and yoke-lever inposition. Fig. 4 is a detail perspective view of a saw and asaw-clamping guide for use with the apparatus in cutting off oldsaw-teeth.

In order to enable those skilled in the art to make and use myinvention, I will now describe the same in detail, referring to thedrawings, wherein- The numeral 1 indicates a vertical standard fromwhich radiate four die-supports 2, 3, 4, and 5, each having its upperside provided with a transverse dovetailed groove, as at 6, to receiveand hold the attachable and detachable dies 7, 8, 9, and 10, each ofwhich is provided with a dovetailed tenon, as at 12, to slide into andout of engagement with the dovetailed grooves of the die-supports. Thedies may be secured in stationary positions on the die-supports throughthe medium of any suitable devicessuch, for example, as screws 13. Thestandard is also provided with four radiating tubular guides or sockets14, 15, 16, and 17, in which may be reciprocated the bars 18, 19, 20,and 21, which carry at their lower ends the gumming, setting, andcutting tools 22, 23, 24, and 25. The tubular guides are located abovethe die-supports in such relation thereto that they will properly guidethe tool-carrying bars to the respective dies, the bars being elevatedby any suitable springs 26 and depressed by blows from a mallet, hammer,or similar instrument.

The saw-gumming die 7 is provided with a V-shaped slot or recess in itsrear edge. The cutting-die S, for cutting off. or removing oldsaw-teeth, is provided with a straight cutteredge at its rear. Thesaw-setting die 9 is provided with a bevel or incline, and the supplemental saw-gumming die 10 is provided with a curved or U-shapedrecess in its rear edge.

The saW-gumming punches or tools 22 and 25 are respectively adapted toenter the recesses in the saw-gumming dies 7 and 10 to cut or remove themetal in forming saw-teeth on a saw-plate, while the tooth-cutting tool23 co-operates with the edge of the die 8 to out OK or remove oldsaw-teeth, and the setting-punch 24 co-operates with the settingdie 9 toset the saw-teeth to the proper angle.

The die-support 2, which carries the die 7, having the V-shaped recess,is provided with a straightedge gage-bar 27, which can be adj ustedtoward and from the front edge of said die 7 for the purpose of formingthe teeth of uniform length, and also for cutting teeth of differentsize and bevel. The gage-bar is provided with a central recess 28 andwith a slot 29 at right angles to its length, through which slot extendsa screw-threaded stem 30, attached to the die-support 2, and having aclamping-nut 32 for holding the gagebarin a fixed position whenadjusted.

The inner edge of a saw-plate to be toothed is adapted to abut thestraight edge of the gage-bar, and to insure the correct distance apartof the teeth the gage-bar is provided with a sliding gage-stop 33,adapted to be held in a fixed position when adjusted by means of aclamping setscrew 34.

The die-support 4 of the setting-die 9 is provided at each side withalateral stud 35, with which detachably engage the hooked extremities 36of a yoke 37 on a saw-plate-supporting arm 38, having an adjustablethumbscrew 39, on which the saw rests, while the toothed edge of the sawrests, upon the flat upper face of the setting-die 9. The sawteeth canbe set to different angles by adjusting the thumb-screw to raise orlower the saw-plate. The yoke of the lever embraces the die-support 4,engages the studs 35, and rests on the front edge of the die-support,and it can be readily removed by unlocking it from the studs.

The gumming-die 10 on the die-support 5 is for the purpose of producingteeth separated by U-shaped spaces, and an adjustable gageplate 40 isprovided to vary the length of the teeth. This gage plate is preferablysupported by a lateral arm 41 thereon, resting against the verticalstandard and having a slot 42, through which extends a clampingset-screw 43.

The gage-bar 27 can be detached, then reversed and arranged back of thesetting-die 9, as indicated by dotted lines, Fig. 3, the slot of thegage-bar being engaged with the screwstem 30, which, as will beobserved, is in proper position to permit such arrangement of thegage-bar relatively to the setting-die that the former can be used toguide the saw when setting the teeth thereof. \Vhen the gage-bar is tobe reversed and used conjointly with the setting-die, the gage-stop 83should be removed, for it would interfere with the saw-teeth which areto be set.

For severing or removing the old teeth of a saw I prefer to employasaw-clamping guidestrip 44, Fi 4, having a straight edge 45, adapted tobear against the die-support 3 of the cutting-die 8 and secured to thesaw by clamps 46, which can be adjusted back and forth to avoidinterfering with any part of the apparatus in manipulating the saw forcutting 01f or removing the old saw-teeth.

The dies are detachable'by their tongueand-groove connections, so thatthey can be removed and other dies substituted therefor.

The tool-carrying bars are forced downward to eifect their respectivepurposes by striking their upper ends with a mallet or hammer, and thesprings restore them to their elevated position for subsequent strokes.

The vertical standard extends below the die-supports to form aprojecting angular shank 47, which is adapted to set in a vise or in asocket in a work-bench or other support for sustaining the apparatuswhen in use.

' The structure is portable and possesses all the requirements forgumming and setting saws and removing old teeth from saw blades orplates.

As indicated by dotted lines, Fig. 1, the shank 47 may be provided witha screw-rod carrying a thumb-nut for clamping the apparatus on asuitable support.

Having thus described my invention, whatl claim is 1. A saw cutter andsetter consisting of a center standard having a series of radiatingdie-supports and a series of radiating tubular guides or sockets locatedabove and coincident with the die-supports, the cutting and setting diescarried by the die-supports, and the reciprocating spring-raised barsmoving in the guides and carrying the cutting and setting tools orpunches, substantially as described.

2. A saw cutter and setter consisting of a center standard having aseries of radiating die-supports and tubular guides or sockets andprojecting below the die-supports to form a shank adapted to a vise orother support, the cutting and setting dies on the die-supports, and thereciprocating spring-raised bars moving in the guides and carrying thecutting and setting tools or punches, substantially as described.

3. A saw cutter and setter consisting of a vertical standard having aseries of radiating die-supports and a series of radiating tubularguides or sockets, the cutting and setting dies carried by thedie-supports, the reciprocating spring-raised bars moving in the guidesand carrying the cutting and setting tools, and the adjustable andreversible gagebar having a support common to two of the dies, wherebythe gagebar can be moved and supported for conjoint operation witheither of said dies, substantially as described.

4. A saw cutter and setter consisting of a vertical standard having aseries of radiating die-supports and tubular guides, the cut ting andsetting dies carried by the die-supports, the reciprocating bars movingin the guides and carrying the cutting and setting tools or punches, andthe detachable and reversible gage-bar arranged on one diesupport inrear of a die and adapted to be removed, reversed, and applied in rearof another die, substantially as described.

5. The combination, with a die support having lateral studs, asetting-die carried by the die-support, and a setting punch or tool, ofa saw-supporting arm having an adjustable screw-rest and provided with ayoke embracing the die-support and in hooked engagement with the lateralstuds, substantially as described.

I11 testimony whereof I have allixed mysignature in presence of twowitnesses.

GILBERT S. STROM.

\Vitnesses:

G. J. ERICKSON, O. H. BOOTH.

IOC

